527 



M. Decoraensis in its smaller peritbecia and appendicnlate sporidia. 

 Specc. of Diatrype nigrospora, Pk. (from Peck), are certainly the 

 same as this. Faint traces of the appendages were still visible on the 

 sporidia quite as distinct as they now are in our specc. of M Mes- 

 chuttii. In the description of D. nigrospora the perithecia are said 

 to be '• sunk to the wood," but in the specc. from Mr. Peck we find the 

 perithecia enclosed in a small, lenticular stroma seated on the surface 

 of the inner bark. The sporidia are surrounded with a thin, hyaline 

 envelope, which indicates a Melanconis rather than a Valsaria. 



M. chrysostroma, (Fr.) 



Valsa chrysostroma, Fr. Summa Veg. Sc. p. 412. 

 Sphtzria xanthostroma, Mont. Ann. Sci. Nat. Ser. II. torn. I, p. 301. 

 Valsa xantho stroma, Tul. 1. c. Ser. IV, torn. V, p. 117. 



Melanconis chrysostroma, Tul. Sel. Carp. II. p. 125, tab. XXIV, figs. 14-20. 

 Melanconiella chrysostroma, Sacc. Syll. 2806. 

 Melanconis chrysostroma, Cke. Syn. 2062. 

 Exsicc. Fckl. F. Rh. 1732.- Ell. & Evrht. N. A. F. 2d Ser. 1563. 



Perithecia circinate, 6-15 together, decumbent, thin-walled, col- 

 lapsing, slightly sunk in the surface of the inner bark, about \ mm. 

 diam., covered with greenish-yellow, pulverulent matter, with short, 

 convergent, sublateral necks and subhemispherical, black, prominent 

 ostiola erumpent in a small, tuberculiform, yellowish (becoming brown) 

 disk which pierces the epidermis and rises above it. The clusters of 

 perithecia are seriately placed and raise the epidermis into slight, 

 flattish pustules. The epidermis is not ruptured, but simply pierced, 

 and when peeled off, the perithecia mostly adhere to it. Asci clavate- 

 cylindrical, 70-75x12 ^. Sporidia biseriate, narrow-elliptical, uni- 

 septate and constricted, straight or nearly so, yellowish-hyaline, 15-20 

 s 5-6 II, with a hyaline envelope and a short, hyaline appendage at each 

 end. 



On Garpinus Americana, West Chester, Pa, (Haines & Ever- 



hart). 



The above diagnosis is from the specc. in N. A. F. 1. c, or rather 

 from specc. from the same locality since found in better condition. 

 Whether this is really the M. chrysostroma, Tul., is not entirely cer- 

 tain. Saccardo and Flickel describe the sporidia as brown, but the 

 specc. distributed in M. March. 1656 (on Fagus sylvatica), 1723 on 

 {Carpinus Betula) and in Linhart's Fungi 266, on the last-named host, 

 have the sporidia yellowish-hyaline. No. 350, Kze. F. Sel. labeled 

 Diaporthe sulphurea, Fckh, is in no way distinguishable from the 

 above mentioned specc, and we believe they are all the same species 

 which, on account of the hyaline envelope of the sporidia, may well be 

 considered as a Melanconis. Dr. Winter who examined the N. A. F. 

 specc. said: "This ought properly to be Melanconis chrysostroma, 

 though I find only hyaline sporidia. It is also very similar to Dia- 



